1. The Stanford University School of Medicine; Stanford CA
2. The Division of Emergency Medicine; Stanford University School of Medicine; Stanford CA
3. The Department of Emergency Medicine; University of California at Davis; School of Medicine; Sacramento CA
4. The Department of Surgery; Santa Clara Valley Medical Center; San Jose CA
5. The Children's Hospital and Research Center; Oakland CA
6. The Division of Trauma and Critical Care Surgery; Stanford University School of Medicine; Stanford CA